Listen to this article As part of the sidepods overhaul that Mercedes introduced on its W13 for this week’s Bahrain test, the Brackley-based outfit reworked the arrangement surrounding its mirrors. This included heavily sculpted mounts to help feed vanes on the cockpit side impact structures. Ferrari team principal Mattia Binotto suggested that the Mercedes approach was questionable, because the mirror design was not supposed to exploit any aerodynamic advantage. “On the mirrors, I am somehow surprised,” said Binotto, when asked by Motorsport.com for his thoughts on the Mercedes changes. “I find them quite surprising, and it is something that we are not expecting. I think in the spirit of that, it is something that I think for the future needs to be addressed. “Already in the past we always argue the mirrors should not have any aero purpose. They should be there just to look behind. “I think that the way that they have designed their car, certainly there is a significant aero purpose in the mirrors itself. I think it is something that we need to stop for the future, no doubts, because the risk is that we will com …